Metallic incubator.



UNITED l-rAajiin'rA FRANK e. PERKINS, or BUFFALO, 'NEW stonk, AssIGNoR To oYBHnRsgINCiiBAiroR co'ivirANY, on BUFFALO, NEW YORK, A CORPORATION on NEW YORK;

METALLICJNGUBATRZ s To all rwhom 'ity/muy; cavern@ f gle'it known tliatrI-,inANit C. PnniiiNs,fa

"citizen of the United States, and. resident of Bu'li'alo, in the county of lrieand State of y1X ew York, have invented certain new and useful Improvements in' li/[elallic Incubatore, of which the following is a specification.

rlhis invention relates to incubator-s, and the object is to produce a cheap and eliicient structure of this description, which is tireproof and extremely unlikely to get outof order.

The apparatus shown herewith utilizes as the therinic element the heat generated by an electric current passing` through a resistance. In the drawings: Figure 1 is a longitudinal central Vertical section of the ineiiliiatoraand Fig. 2 is a transverse section on the "line 2 2 of Fig. 1. i In the present embodiment ofthe invention, all the parts are made of sheet nietal, suitably clamp-jointed or soldered together.

-The casing 1 is open at the front, and has closed sides 2, 2 and back 3. The sidesr and back form a single structure which rests onv a base 4, and said base covers a removable tray 5 that constitutes the bottom of the broeder chamber.

The door lfor closing the front and affording access to the egg chamber, consistsb of a metal frame G, hinged at its bottom edge 7, and fastened shut by means of a suitable latch 8 at the t0p. Said frame contains two panes of glass '9 and 10, flush with its inner and outer faces, respectively, and having between them an air-space 11. The latter forms a non-conducto;l fortheheat contained in the egg chamber. The edges of the door frame G are beveled inwardly (Fig. 2), and' thus the door may be more tightly closed than if saidI edges were square.

The top 12 of the incuhati-irwis removable, and rests in a socket or depression in the rolled upper edges of the sides, as shown.

Alelow tlietop 12, and extending across the whole apparatus, is a plate 123. made of a substance which is a poor conductor of heat', such as asbestos. 'llhe edges of this plate have a. metallic binding 14, and rest upon a' ledge 15 that extends around the inside-of the casing. Similar noii-conducting`plates 1G and 1T. 1T are Iixed at the back and ends, respectively, and a slight distance l'lienet'i-oin.

Specification f'Letter's Yatiitf p Y Application filedl August l y "Patented 1.9.09. vse iaiaqljisonae. y "1" he spaces between said'platcs and the sides of the incubator constitute tiues"oiifcliaiiiiels for the circulation vof air, as shown by' the arrows. Air enters thecasing'tl1iotigli*pei forated slides and passes'jupward?'and' over the partitions 1(3a1id 17,"ai'id'liiids'an exit through other perforated slides't). @The slides 18 and 1f) may be moved longitudinali y to cut olf the air-current :is desired.r

rl`he. egg tray is supported in guidesl 20, and consists of a rectangular metaly frame 21,' that has a wire-netting bottom 22. 'lheleggs are placedon the latter in the usual manner, and the, tray may be withdrawn through the door 6. A vtra-p door 23 is provided to let the hatched chicks fall into the tray 5.

Itis obvious from the drawings that the air circulating through the incubator must pass through the tray in order to [ind an exit. lhe eggs are thus certain io be thoroughly Ventilated.

The heating device used in connection` with this invention consists of arcoil of tine wire that forms a resistance to the passage 'of an electric current, and therefore becomes hot when a current is passed through it. Said coil 2a is fixed on the under side of an asbestos tablet or plate 25, and is covered by a thinner sheet of non-conducting'material 26. A similar sheet 27 may be the thermostat breaks'the circuit through e,

the coil 21 in the usual manner, and closes said circuit when the temperature drops'.

ln order that. the, plate and. coil"2twith attached parts, may be removed through the top of the incubator with the plate 13, the terminals of the said coil end .in a plug 32 that maybe readily inserted in or removed from a socket 3?. The Alatter is 'xedly supported in the partition lt', and leads I--t extend therefrom to a: source of electric current.

lt willbe seen that the heat. in the incubator is aoove the eggs lying-inlthe-tay., l

and is reflected downward upon said eggs .'by theV asbestos; plate 25.

1,-A`1'netallic incubator, consisting of a hollow base having air inlet openings; a middle portion constituting the sides of the incubator open at the top and bottom, and

' resting'on said base, and having ai1 outlets adjacent- Lto V,the bottom of the Sides; walls Withiny said middle portion, spaced from the said sides, and having air passagesover'the Stops of: the walls; a metallic door 1n.one of the said sides; a hollow metallic cover rest- .ing upon said sides; an impervious heat insulatingplate supported under said cover; an 'electric heater lsupported below said plate; and an egg'tray supported under said heaterand above said base.

2. A metallic incubatolf, consisting of a hollow.` base having aix inlet openings; a middle 'portion open at the top andbottom,

and constitutin the sides of the incubator, resting on said ase, and havin# air outlets adjacent to the bottom of the sides; heat in- Sula-ting walls within said' middle portion spaced from said sides, and having air passages over the tops thereofg-a metallic doox` in one of said sides; a hollow metallic cover resting upon saidfmiddle portion;4 an impervious heat insulating plate supported under saidrcover; an electric heater supported below said plate and .an egg tray supported under .said heater and above said basel' a l FRANK ,0. PERKINS. lVitnesses: z.

Il. L. Osnoon. 

